I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
whity whitey whit witty white wit wite whid whet what wait widdy wheat whidah whydah wat wet wot wadi wady watt weet wide
whity hit shit chit moiety doughty ditty deity city pity piety nitty bitty titty laity kitty gaiety haughty whit whitey mity white witty chitty shitty